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The story
On the 4th, major French bank Crédit Mutuel Arkéa announced that it had suffered a cyberattack resulting in fraudulent transactions. According to analysis by experts who track cryptocurrency transactions, the damage is estimated at $133 million — roughly ¥21 billion — with the stolen funds suspected of having been converted into crypto and laundered. On 5ch, threads buzzed with debate over whether crypto or cash is safer, speculation about the hacker group’s identity, and concern over how this connects to a domestic bank data leak reported around the same time.
Major French bank suspected of losing “roughly ¥21 billion” in cyberattack
According to AFP, major French bank Crédit Mutuel Arkéa revealed on the 4th that it had suffered a cyberattack that led to fraudulent transactions. Experts who track cryptocurrency transactions estimate the damage at $133 million — roughly ¥21 billion — with the stolen funds suspected of having been converted into crypto and subsequently laundered.
French bank hit by cyberattack — possible outflow of funds
Source: news.ntv.co.jp / Original article here
What people said
That's exactly why the scary part is still ahead of us
It's North Korea anyway, so crypto's obviously more convenient for them
Bic Camera takes it too, right?
Do that and you'd get caught in an instant…
Probably because it's reported after converting from euros to yen?
For us plebs in Japan, this might be the only way to survive
Do it, then hand it out to everyone
Then public opinion would swing toward not pursuing it
Mere data will never beat a stack of bills
Silvio Gesell would beg to differ, though (early-1900s economist who argued hoarded cash should lose value over time)
Seriously, this.
Just cut the undersea cables, right? (-。-)y-゜゜゜ (emoticon of someone smugly puffing a cigarette)
In Europe's case, it's not just a data leak — there's serious actual damage
Up to 10 million yen, yeah
They don't even assume it could be breached, so there's no provision for it at all
Bad actors do this regardless of nationality
With AI advancing, an era where anyone can be a hacker is right around the corner
The odds of getting hit by a tokuryu gang are way lower (tokuryu: loosely-connected crews recruited anonymously online for one-off crimes)
At this rate banks will eventually face a run
Plenty of rich people are already moving their money — as usual, they're quick to act even in situations like this
They're rich precisely because they've got good judgment and move fast
A real bank run will probably only happen once a Japanese bank actually gets hacked
Phew, saved
Like it'd actually be guaranteed in practice, lol
What do you mean?
The payoff isn't paid by the bank itself, so it's not like it just wouldn't get paid
Not credit cards, my bad — it was card loans
Sumitomo Mitsui Bank falls too
[BREAKING] Sumitomo Mitsui Bank leak: 220,000 records exposed — email addresses also leaked [633746646]
https://hayabusa9.5ch.io/test/read.cgi/news/1793873341/
It's 'only' email addresses for now so we can breathe a little, but it's just a matter of time before more gets breached
So online banking stuff isn't included so far?
Then again, where on earth did they even log in from?
feels like exactly the type who'll withdraw it all in cash and get robbed by a gang recruited through a shady 'dark part-time job' ad (yami baito — gig-work ads secretly used to recruit people for robberies/scams)
If your data's been scraped from everywhere, it all gets cross-referenced — "this guy just withdrew a ton of cash," plus his address, family details, all of it bundled together and exposed in one go
Background and key points of this discussion
The “¥21 billion” figure here is simply the yen conversion of the euro-denominated damages (equivalent to $133 million), and the thread’s complaint about the “oddly specific amount” likely comes down to that exchange-rate math. Laundering stolen funds through crypto has become a common tactic in large-scale cybercrime in recent years, thanks to how easily it crosses borders and how hard it is to trace. The thread also brought up the Sumitomo Mitsui Banking Corporation card-loan email leak (roughly 220,000 addresses) reported around the same time — but that is a separate, unrelated incident to this French bank case, and the two shouldn’t be conflated. There was also back-and-forth about Japan’s deposit insurance system, under which deposits are protected up to ¥10 million per depositor per institution (the “payoff” scheme).
※This article is excerpted and summarized from the 5ch (News Speed+) thread “French megabank hit by cyberattack, loses ¥21 billion — stolen funds laundered through crypto.”
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